Heating unit



March 30, 1937. H. N. BARUCH ET AL HEATING UNIT Filed Feb. 28, 1935 2 Sheets-Sheet 1 H. ll IIIIIIIIIIIIWIIL .I

Q 5 AND. 056d A- .Bloxorn,

March 30, 1937.. H N BARUCH E AL 2,075,161

HEATING UNIT Filed Feb. 28, 1935 ZSheetS-Sheet 2 Hazlw Mjazzzd 4ND Qed 141,5 ZOJCOIXZ 3 u 0.

k. 01 mm Patented Mar. 30, 1937 UNETED STAE HEATING UNIT Park, Va.

Application February 28, 1935, Serial No. 8,770

3 Claims.

This invention relates to heating units, and is an improvement over the embodiment disclosed in our copending applications Serial No. 681,628 filed July 21, 1933, Patent No. 2,046,051, and Serial 5 No. 728,998 filed June 4, 1934, Patent No. 2,048,675 for improvements in heating units particularly adapted for insertion in open fireplaces.

An object of this invention is the provision of a heating unit capable of being mounted in the present construction of open fireplaces for the purpose of heating water to be distributed to heat exchange devices disposed within a dwelling or the like and comprising a hot water heating system and wherein the products of combustion are adapted to pass through fiues in the upper portion of the unit so as to increase the heat exchange capacity of the unit.

Another object of this invention is to provide a heating unit of this character which may be constructed of relatively thin flexible sheet metal forming inner and outer jackets suitably spaced apart in a uniform manner and maintainedin spaced apart relation notwithstanding the expansion of the walls thereof under temperature changes, the unit including a replaceable grate and grate front structure.

A further object of this invention is to provide a heating unit capable of utilizing as much of the heat generated by the heating means as possible and which is so constructed that the draft may be readily controlled at selected portions of the firebox or grate.

With the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claims appended hereto.

In the drawings, wherein like symbols refer to like or corresponding parts throughout the several views,

Figure l is a vertical sectional view of a heating unit constructed according to an embodiment of this invention, the view being taken on the line l-l of Figure 2.

Figure 2 is a front elevation partly broken away and in section of a heating unit of this character mounted in an open fireplace construction.

Figure 3 is a front elevation of the unit provided with doors.

Figure 4 is a side elevation of the structure shown in Fig. 3.

Figure 5 is a vertical sectional view of a modified form of heating unit.

Referring now to ,the drawings, and first to Figures 1 and 2, the numeral l designates gen- 55 erally an outer jacket, and the numeral lldesignates generally an inner jacket disposed in spaced relation to the outer jacket.

The outer jacket It comprises a bottom plate or wall l3 which is secured along its front edge to a front outer wall l2, and is secured along its rear edge to a rear wall I. This rear wall [4 at a point spaced upwardly from the bottom thereof is inclined forwardly as at l so as to provide a constricted upper end or throat for the heating unit. The front wall [2 is substantially vertical and is adapted to engage snugly against the inner side of the front wall l6 of the fireplace structure. A top wall 18 is secured at its rear edge to the upper edge of the upper portion I5 of the rear wall I4, and is secured at its front edge to the upper edge of the front wall l2.

A pair of outer side walls l9 have their marginal portions secured to the bottom, front, rear and top walls of the outer jacket in a well-known manner, and these walls I9 are adapted to snugly fit against the side walls of a fireplace. Each of the side walls I 9 is provided adjacent the bottom thereof with intake nipples 20, and with outlet nipples 2| adjacent the upper ends thereof so that the unit may be readily coupled with a hot water heating system.

The inner jacket H comprises a bottom plate or wall 22 which is secured at its front edge to the front plate or wall l2 at the bottom of the opening 23 in the front of the unit, and is secured at its rear edge to a rear wall 24. The rear wall 24 is shaped similar to the outer rear wall I4, being provided with a forwardly inclined upper portion 25. The rear wall members l4 and 24 are held in uniformly spaced apart relation by means of spacers or tie members 26 welded or otherwise secured to the walls [4 and 24. An upper inner wall 21 is secured to the upper end of the rear wall 24, and the junction between these walls 24 and 2'! is preferably formed by a curved portion 28. A front inner wall 29 is secured to the front edge of the upper or top wall 27 of the inner jacket, and is connected to the front outer wall I2 by a connecting plate 30 which defines the upper edge of the opening 23.

Rearwardly convergent side wall members 3| have their marginal portions secured to the bottom, rear, top and front walls, and these inner side wall members 3| are disposed in spaced parallel relation to the outer side wall members 49, being held in spaced relation by spacing or tie members 26.

As will be noted from the drawings, and particularly Fig. 1, the inner bottom wall 22 .isin- V suppq ting a horizontally disposed barclined in an upward and rearward direction, with the intake nipple 2U discharging into the space between the two jackets l3 and H adjacent the front of the bottom wall 22. The space between 5 the rear edge of the bottom wall 22 and the outer bottom wall [3 is substantially greater than the distance between the outer and inner rear walls l4 and 24, respectively. By spacingthe inner bottom wall 22 at its rear portion in this manner the water within the hollow bottom of the unit will flow more freely in a rearward andupward direction. 7

The products of combustion are permitted to pass upwardly through the unit by means of 5 ducts in the form of pipes or tubes 32 which are connected at their lower ends to the inner top wall 21 and at their top or upper ends to the outer top wall l8. The water inthe upper -por.- tion of the unit is adapted to engageabout the periphery of the tubes 32 and to be additionally heated e eby before the water flows u through the outlets 21.

Grate supporting brackets 33 of substantially L shape are secured to the inner rear wall 24 2 above the inner bottom 22, and side brackets 33;: are secured to the inner side Walls, 31. A grate structure generally designated as 34 is adapted to be disposed on the brackets 33 and 33d and comprises a grate frame 35 of open construction within which a plurality of grate bars 36are mounted; The bars are substantially Va shaped inv transverse section, and a grate bar operating member 31 extends below the bars 36 in substantiallythe center thereof, being mount- 3 ed adjacentfitsrear end. in a, depending lug 38, and at its frontportion in a depending lug 39. The sliding movement of the operating member 37; is limited by a stop, member 40 secured to the member 31 inwardly of the front lug 3.9.

4 A basket member 4.3;issecured at itslowerend to the grate frame 35, and extends, entirely across. the opening. 23. The member 43 forms the front wall;of the grate 34., and is preferably perforate. so as to permit the entrance of airto the fuel. disposedon the grate.

A sliding door or draft controlling member 44 has an overturned upper edge portion slidingly engaging the upper edge portion of the member 43. Preferably thisamember 44 is of a length substantially equal to one-half of the width. of the opening 23 so that when fresh fuel is placed in the grate 34- the draft controlling member 44 may bemoved to the side of the grate opposite from thefresh fuel so that the partially burned .6 fuel will not burn as freely as the fresh fuel.

This draft controlling memberis preferablyimperforate in its. upper portion 45, and thelower portion '46 extends belowthei grate 34 and is provided with a plurality of draft openings-4.1; A

.6 slide 43 is carried by the lower'portion 46: and

openings-"41. w V

' The inner sidewalls 3L of the inner jacket H are each provided with alined brackets 49 for (not shown) and upon which'suitable utensils may be hung as is customary inopen fireplaces.

Water for domestic use may be heated by means of a heating unit secured-to and extendcontrols the opening and closing of the draft mg above the hereinbeforedescribedv heating unit. This domestic water heating unit comprises inner and outer jackets 50 and 5| respectively which are suitably spaced apart and formed substantially to the configuration of the throat of the fireplace. The front portion of this heating unit extends rearwardly and upplace which is connected to the damper 54 by ean of a onnec in l 56- Referring now to Figures 3 and 4, there is 7 here disclosed a heating unit similar in every detail to the heating unit disclosed in Figures 1 and 2. In this construction the outer jacket lea has secured to the front wall l2a a pair of feed doors 51 provided with transparent windows 58.. These doors. 51 have the front wall thereof outwardly or forwardly offset; and dampers 59 may be provided in these doors. Ash doors till provided with slides 6| are dis-i. posed below the upper doors. 51' and are hinged to the wall I 20. in any well known manner;

In Figure 51there is disclosed a further formof heating unit comprisingan outer jacket lb and an inner jacket I lb similar to thejackets I0 and H, and in which the bottom wall 22b is inclined similar to the wall 22". In this form, however, the=fluesor-pipes 32b extend below the-top wall 21b of the inner jacket I lb, and are connected to a baffle plate 62 which hasa forwardly and up-.

wardly extending 'rear portion 63. This'baflle 62 prevents the pocketingof air in' the rear-upper portion of the unit.

It will benoted from Fig. 1 that a self-contained unit is there shown in which the main portion thereof is composed of spaced walls form-ingthe bottom portion, the rear portion, and the side portions. The rear portion, and the side portions have their walls diverging from each other at the uppermost part of this portion of the unit so as to form an enlarged chamber, the upper and lower walls ofwhich are parallel'with each other- A plurality of flue pipes, positioned adjacent each other, pass through this enlarged chamber, and the spaces between the flue pipes are closedby the upper and lower walls. Naturally, the uppermost portion and the lowermost portion of the flue pipesare open to permit the products oficombustion to pass therethrough. Superimposed upon this main portion of the unit is another heating unit also composed of spacedwalls acting as a water jacket, and this has peripherally disposed walls which rise directly uponthe, top of the main portion of the unit, and one of the walls, preferably. the front wall, of this upper. member isinclinedrearwardly towards the rear wall so as to form a constricted opening; This constricted opening is regulated by meansof a damper. By

reasonthereof, the products of combustion, ex

hausting from the upper part of the fines, have their heat extracted by the spaced walls, and; in consequence, as much heat as possible is extracted from; the products of combustion, first by the spaced walls of the main heater itself, then bythe enlarged chamber at the upper part of the heater,

and finally by the heater portion abovethe flues. This self-contained unit is adapted to be placed into the open part of a, fireplace and all that is necessary is to connect suitable p s. r t e. wa-.-.

ter supply and for the passage of the heated water.

It is obvious that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

What is claimed is:

1. In a fireplace heating means including a hollow walled hot water heater insertable in a fireplace opening; a second hollow walled domestic water heater open at the top and bottom and mounted on the top of the first named heater, said second heater having front, side, and rear walls and having in its upper part a constricted opening, and a damper plate carried by said second heater to regulate the size of the constricted open" ing.

2. The combination with a jacketed heating unit insertable in a fireplace opening, of a domestic water heater comprising spaced front, side and rear walls the front wall of which is inclined toward the rear wall to form a constructed opening, said heater resting on the top of the heating unit, a damper for regulating the; size of the constricted opening and connecting means connecting said damper with said heater.

3. A heating unit insertable in a fireplace comprising hollow communicating side, rear and ,bottom walls constructed of sheets of material, and having an open front, a hollow top formed by the side and rear walls diverging from each other" and forming also a front wall, a plurality of flue's extending through said hollow top and having their upper and lower faces open and the spaces between the fiues closed by the walls forming the hollow top, jacketed walls extending peripherally around the hollow top and extending above said hollow top and above the flues, one of said'walls being inclined from the front to the rear of the unit forming a constricted opening and a damper for regulating said opening. I

HARTWIG N. BARUCH. OTIS T. AMORY. OBED A. BLOXOM. 

